J-20 5th Gen Fighter Thread VIII

guanyu158

New Member
Registered Member
In putonghua, four and death sounds exactly the same. But China's arm forces do not believe in superstitions, they believe in science and technology.
not the same, different tone. chinese is tonal language. anyway, this superstition is more common in certain dialects such as cantonese instead of mandarin. contradict to this superstition, there are many phrases including four in chinese, which have good meaning or mean good luck.
 

by78

General
One nice image for the weekend.

53109927792_4bfa849856_k.jpg
 

Phead128

Captain
Staff member
Moderator - World Affairs
One frequent criticisms of J-20's stealth is the canards, however, nobody has ever criticized F-22's protruding twin rear horizontal stabilizers as degrading RCS or VLO performance. As far as physical protrusion, twin horizontal rear stabilizers are essentially permanently locked canards in the rear of the aircraft, yet F-22 stealth isn't compromised. Neither are canards for J-20 stealth!

"Hurr durr, they stick out of the plane like popsicles sticks"

Now I concede that F-22's twin rear horizontal stabilizers are flush & parallel with the aircraft body, but so are J-20's canards during BVR combat at long-distance and supercruising? If I understand correctly, the canards are activated (non-parallel to body) during high AoA which is essentially WVR where VLO isn't even important anymore.... but they are "locked" in parallel position during BVR long-range where RCS and VLO performance is utmost importance? Just wanted to confirm if the logic is correct because the canard criticism is so damn frustrating.
 

Michaelsinodef

Senior Member
Registered Member
One frequent criticisms of J-20's stealth is the canards, however, nobody has ever criticized F-22's protruding twin rear horizontal stabilizers as degrading RCS or VLO performance. As far as physical protrusion, twin horizontal rear stabilizers are essentially permanently locked canards in the rear of the aircraft, yet F-22 stealth isn't compromised. Neither are canards for J-20 stealth!

"Hurr durr, they stick out of the plane like popsicles sticks"

Now I concede that F-22's twin rear horizontal stabilizers are flush & parallel with the aircraft body, but so are J-20's canards during BVR combat at long-distance and supercruising? If I understand correctly, the canards are activated (non-parallel to body) during high AoA which is essentially WVR where VLO isn't even important anymore.... but they are "locked" in parallel position during BVR long-range where RCS and VLO performance is utmost importance? Just wanted to confirm if the logic is correct because the canard criticism is so damn frustrating.
We had that conversation earlier this thread(might have to go back more than 10 pages), including some info from actual papers on a canard vs non-canard design of the J-20 and it's RCS.

TL: DR The diffference is very little and there's way more other factors when it comes to stealth/rcs than just the canards.
 
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